Residential security guards are highly regarded and typically employed to protect their principal’s homes, family members, belongings and assets from any risk or potential threat. The most qualified candidates will be trained in total protective services and likely to be former emergency or armed services personnel, but this is not always the case.Duties and responsibilities will vary depending on the requirements of the Principal and can include, but are not limited to, gate security, CCTV monitoring, security patrol, key-holding responsibilities, surveillance and procedures for reporting any suspicious activities and persons. The residential security guards will also act as the first responders to the Principal’s alarm activations and first line of defence. Residential Security Guard Services.